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Windows Installer tried running AddInUtil.exe (and others)


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Just for some context, a few weeks ago i got some malware on my computer that compromised my online accounts (probably through my browser). Back then Microsoft Windows Security had caught 2 trojans, so i recurred to a community which suggested a clean windows install from a USB flash drive. I did a basic reinstall of windows (From my own computer), but apparently it didn't work as i've been recieving e-mails from people (who are not me) trying to change my passwords. This could be because the login information got stolen and the responsible for the malware stored it somewhere else. But i know the malware was't eliminated because of a Windows Security notification that said the following: "Windows installer has tried to load AddlnUtil.exe which doesn't meet the security requirements of Smart App Control.". Along with two other that were uploaded in a image to this thread.
Naturally i went and searched for "AddinUtil.exe" and ended up finding the support thread linked below. Now i know this "AddInUtil.exe" must be a disguised piece of malware as well as the others (which were .dll files and not .exe apps). So i tried the clean install from a USB flash drive, and it didn't work.
Since this thread i found seems to be tailored to this specific user, i didn't find a way to use it to solve my issue.

I'm rather new to this whole malware thing, so if there's anyone experient reading this, all help is welcome!

System Information:
ACER Aspire 5 A-515-56-36UT Laptop
Intel Core I3 1115G4 3GHz
8Gb RAM
128Gb NVMe SSD
Windows 11 Home 64-bit
Windows Security and Malwarebytes Premium installed
Browser: Chrome (Used Opera when the first malware attack happened)

Will be happy to provide with any other information.

Thank you and have a good 2024.

 

Captura de tela 2024-01-12 234310.png

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@Joao1100

Let's get the info to get the process started.

Please do the following so that we may take a closer look at your system for any possible infections.

Do these 2 steps FIRST so that files and folders are set to SHOW, plus also, Turn OFF Windows Fast Start.
Show-Hidden-Folders-Files-Extensions
https://forums.malwarebytes.com/topic/299345-show-hidden-folders-files-extensions/

Disable-Fast-Startup
https://forums.malwarebytes.com/topic/299350-disable-fast-startup/

Then please restart the computer and do the following.

WARNING: Do Not click the Repair option under Advanced unless requested by a Malwarebytes support agent or authorized helper

NOTE: The tools and the information obtained are safe and not harmful to your privacy or your computer, please allow the programs to run if blocked by your system.

  • Download the Malwarebytes Support Tool
  • In your Downloads folder, open the mb-support-x.x.x.xxx.exe file
  • In the User Account Control pop-up window, click Yes to continue the installation
  • Run the MBST Support Tool. The tool also downloads and runs a file called FRSTEnglish. Please allow it to run.
  • In the left navigation pane of the Malwarebytes Support Tool, click Advanced
  • In the Advanced Options, click Gather Logs. A status diagram displays the tool is Getting logs from your machine
  • A zip file named mbst-grab-results.zip will be saved to the Desktop or on the hidden Public desktop (usually C:\Users\Public\Desktop), please upload that file on your next reply

    Then be patient for the next expert to take your case.

Thank you

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  • Root Admin

Hello @Joao1100 and :welcome:

I'm probably going to be busy over the weekend and we're off on Monday, but I'll do my best to reply back as soon as I can.

 

 

 

Let's go ahead and run a couple of scans and get some updated logs from your system. Please read the entire post below before starting so that you're more familiar with the process

Then follow each step in the order provided. Unless otherwise asked, please attach all logs

 

Please make the following system changes:

  • If you have not done so already - Enable System Protection and create a NEW System Restore Point
  • Temporarily disable your antivirus real-time protection or other security software first only if it blocks or interferes with the scans or downloads.. Make sure to turn it back on once the scans are completed
  • Temporarily disable Microsoft SmartScreen to download software below only if needed. Make sure to turn it back on once the downloads are completed
  • Disable-Fast-Startup
  • Show-Hidden-Folders-Files-Extensions

Please run the following scans:

  1. Click the following link and run a  Scan with AdwCleaner
  2. Click the following link and run a  Scan with Malwarebytes 
       RESTART the computer
  3. Click the following link and run a  Scan with Farbar Recovery Scan Tool 
     

Example image of where to click to attach files when posting your reply

image.thumb.png.e208c182ff570799c53bcf57

 

Thank you

 

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  • Root Admin

Please follow the steps below.

 

[ 1 ]

Your DNS Servers: 181.213.132.2 - 181.213.132.3

Please consider making the changes per this topic:  Change DNS to Secure DNS

[ 2 ]

It looks like you might have a WMI Service issue we'll need to investigate. Malwarebytes did not run because WMI seems to have an issue.

Error: (01/13/2024 04:33:14 PM) (Source: Service Control Manager) (EventID: 7001) (User: )
Description: The Malwarebytes Service service depends on the Windows Management Instrumentation service which failed to start because of the following error:
The service did not start due to a logon failure.

[ 3 ]

Please run the following fix

 

NOTE: Please read all of the information below before running this fix.

  • NOTICE: This script was written specifically for this user, for use on this particular machine.
  • Running this on another machine may cause damage to your operating system that cannot be undone.

Once the fix has been completed, please attach the file FIXLOG.TXT to your next reply

Farbar program:   C:\Users\joaom\Downloads\FRSTEnglish.exe

Save the attached file:  FIXLIST.TXT to this folder C:\Users\joaom\Downloads\

NOTE. It's important that both files, FRSTEnglish.exe, and fixlist.txt are in the same location or the fix will not work.

Please make sure you disable any real-time antivirus or security software before running this script. Once completed, make sure you re-enable it.

 

 

Run the Farbar program with Admin rights and press the Fix button just once and wait.

The fix may possibly take up to 60 minutes to complete

If the tool needs a restart please make sure you let the system restart normally and let the tool complete its run after restart.
The tool will make a log named Fixlog.txt in the same folder you ran the Farbar program from. Please attach that log on your next reply.

 

  1. NOTE:  This fix will run a scan to check that all Microsoft operating system files are valid and not corrupt and attempt to correct any invalid files. It will also run a disk check on the restart to ensure disk integrity.
  2. NOTE: As part of this fix all temporary files will be removed. If you have any open web pages that have not been bookmarked please make sure you bookmark them now as all open applications may be automatically closed.
                Also, make sure you know the passwords for all websites as cookies may possibly be removed in some cases, but not all cases.
  3. NOTE: As part of this fix, it will also reset the network to default settings including the firewall. If you have custom firewall rules you need to save please export or save them first before running this fix.

The following directories are emptied:

  • Windows Temp
  • Users Temp folders
  • Edge, IE, FF, Chrome, and Opera caches, HTML5 storages, Cookies and History
  • Recently opened files cache
  • Discord cache
  • Java cache
  • Steam HTML cache
  • Explorer thumbnail and icon cache
  • BITS transfer queue (qmgr*.dat files)
  • Recycle Bin

Important: items are permanently deleted. They are not moved to quarantine. If you have any questions or concerns please ask before running this fix.

The system will be rebooted after the fix has run.

fixlist.txt

Thanks

 

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I've recieved a new notification about a windows service trying to open an unknown app. This time Powershell tried to run "WMIC.exe".

Also, i noticed my browser is weird after the fix, the tabs won't load properly, I'm uploading a screenshot of my twitch homepage that is not loading correctly.

Captura de tela 2024-01-14 225433.png

Captura de tela 2024-01-14 225852.png

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  • Root Admin

Please run the following

 

Please download and run the following Kaspersky Virus Removal Tool 2020 and save it to your Desktop.

(Kaspersky Virus Removal Tool version 20.0.10.0 was released on November 9, 2021)

Download: Kaspersky Virus Removal Tool

https://devbuilds.s.kaspersky-labs.com/devbuilds/KVRT/latest/full/KVRT.exe

How to run a scan with Kaspersky Virus Removal Tool 2020
https://support.kaspersky.com/15674

How to run Kaspersky Virus Removal Tool 2020 in the advanced mode
https://support.kaspersky.com/15680

How to restore a file removed during Kaspersky Virus Removal Tool 2020 scan
https://support.kaspersky.com/15681

 


Select the  image.png  Windows Key and R Key together, the "Run" box should open.

user posted image

Drag and Drop KVRT.exe into the Run Box.

user posted image

C:\Users\{your user name}\DESKTOP\KVRT.exe will now show in the run box.

image.png

add -dontencrypt   Note the space between KVRT.exe and -dontencrypt

C:\Users\{your user name}\DESKTOP\KVRT.exe -dontencrypt should now show in the Run box.
 
image.png


That addendum to the run command is very important, when the scan does eventually complete the resultant report is normally encrypted, with the extra command it is saved as a readable file.

Reports are saved here C:\KVRT2020_Data\Reports and look similar to this report_20210123_113021.klr
Right-click direct onto that report, select > open with > Notepad. Save that file and attach it to your reply.

To start the scan select OK in the "Run" box.

A EULA window will open, tick all confirmation boxes then select "Accept"

image.png

In the new window select "Change Parameters"

image.png

In the new window ensure all selection boxes are ticked, then select "OK" The scan should now start...

user posted image

When complete if entries are found there will be options, if "Cure" is offered leave as is. For any other options change to "Delete" then select "Continue"

user posted image

When complete, or if nothing was found select "Close"

image.png

Attach the report information as previously instructed...
 
Thank you
 
 

 

 

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  • Root Admin

What signs are you still having or showing that you have an infection?

Is there a log showing something or a screenshot of something?

 

 

Please run the following ESET Online Scanner and perform a Full Scan

 

Click the following link to save the installer for ESET Online Scanner

https://download.eset.com/com/eset/tools/online_scanner/latest/esetonlinescanner.exe

  • It will start a download of "esetonlinescanner.exe"
  • Save the file to your system, such as the Downloads folder, or else to the Desktop.
  • Go to the saved file, and double click it to get started. 
  • When presented with the initial ESET screen, click on "Get Started". Read and accept the Terms of use
  • On the "Before we start..." screen chose if you want to send anonymous data and if you want to provide feedback or not, then click Continue
  • When prompted for scan type, Click on the Full Scan button
  • Enable  ( select )   the radio selection "Enable ESET to detect and quarantine potentially unwanted applications"   and click the Start scan button.
  • Have patience.  The entire process may take a few hours or more.
  • When the scan is completed, if something was found, it will show a screen with the number of detected items.  If so, click the button marked “View detected results”.
  • Click The blue “Save scan log” to save the log and give it a name and location you remember.
  • If something was removed and you know it is a false postive, you may click on the blue ”Restore cleaned files”  ( in blue, at the bottom).
  • Press Continue when all done.  You should click to turn off the offer for “periodic scanning”.
  • Enable "Delete application data on closing" - You do not need to submit feedback unless you want to. Simply ignore and close the program.

 

Note: If you do need to do a File Restore from ESET please follow the directions below

[KB2915] Restore files quarantined by the ESET Online Scanner version 3

https://support.eset.com/en/kb2915-restore-files-quarantined-by-the-eset-online-scanner

 

Please attach the ESET scan log you saved at the end to your next reply

 

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I'm not sure if this is supposed to happen, but as soon as i clicked the "full scan button my screen was filled with prompts from a driver that didn't load or something, im'm attaching a screenshot. Just to clarify, i didn't disable anything before scanning like the other times i was asked to do it.

Answering your question, i think i'm still infected because of those weird notifications which i'm pretty sure are caused by some infection, as i'd never got them before i got infected. But i could be wrong and it's just some system error caused by omething i did, but i don't think that's the case, as such an issue probably wouldnt be notified by Windows Security, but by some other windows function.

I will reply shortly with the ESET scan results

 

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  • Root Admin

Nothing found. Let's try a scanner from Sophos

 

The instructions below may not be complete as I think Sophos made some changes to their UI

 

 

Sophos Scan & Clean

Download Sophos Free Virus Removal Tool and save it to your desktop.

  • If your security alerts to this scan either accept the alert or turn off your security to allow Sophos to run and complete.....
  • Please close all other open applications and Do Not use your PC whilst the scan is in progress... This scan is very thorough so it may take several hours to complete, please be patient...

Double click the icon and select Run

Click Next

Select I accept the terms in this license agreement, then click Next twice

Click Install

Click Finish to launch the program

  • Once the virus database has been updated click Start Scanning

If any threats are found click Details, then View log file... (bottom left hand corner)

 

Attach the results in your next reply

  • Close the Notepad document, close the Threat Details screen, then click Start cleanup

Click Exit to close the program

 

If no threats were found please confirm that result...

  • The Virus Removal Tool scans the following areas of your computer:
  • Memory, including system memory on 32-bit (x86) versions of Windows
  • The Windows registry
  • All local hard drives, fixed and removable
  • Mapped network drives are not scanned.

Note: If threats are found in the computer memory, the scan stops. This is because further scanning could enable the threat to spread. You will be asked to click Start Cleanup to remove the threats before continuing the scan.

 

Saved logs are found under this sub-folder: C:\ProgramData\Sophos\Sophos Virus Removal Tool\Logs 

Please attach that log on your next reply

Thank you

 

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  • Root Admin

No threats found.

 

SecurityCheck by glax24              


I would like you to run a tool named SecurityCheck to inquire about the current security update status of some applications.
CheckSecurity is a utility for quickly checking for the presence of vulnerable applications

  • Temporarily disable Microsoft SmartScreen to download the software
  • Download SecurityCheck by glax24: https://tools.safezone.cc/glax24/SecurityCheck/SecurityCheck.exe
  • If SmartScreen blocks the file from running click on More info and Run anyway
  • This tool is safe.   Smartscreen is overly sensitive. You can check the VirusTotal scan of the tool from here
  • Right-click  with your mouse on the Securitycheck.exe  and select "Run as administrator"  and reply YES to allow to run & go forward
  • Wait for the scan to finish. It will open a text file named SecurityCheck.txt Close the file.  Attach it with your next reply.
  • You can find this file in a folder called SecurityCheckC:\SecurityCheck\SecurityCheck.txt

Items checked:

  1. User Account Control (UAC).
  2. Service pack.
  3. IE version.
  4. Automatic OS update. Sets of critical KB patches when updating is disabled.
  5. Antivirus, firewall, other security utilities.
  6. Versions of Java, Oracle Virtualbox.
  7. Version of Adobe Flash Player, Adobe AIR.
  8. Versions of Adobe Reader, Acrobat Reader DC, Foxit Reader.
  9. Versions of media players (iTunes, AIMP, foobar2000).
  10. Versions of messengers (Skype, Pidgin).
  11. Versions of installed browsers (Chrome, Opera, Firefox, Yandex, SeaMonkey).
  12. Versions of mail programs (The Bat, Thunderbird).
  13. Checking running processes and security program services
  14. Searching for installed Adware programs and optimizer programs (More than 5000).

Thank you

 

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  • Root Admin

Okay, please run the following again.

 

Let's go ahead and run a couple of scans and get some updated logs from your system. Please read the entire post below before starting so that you're more familiar with the process

Then follow each step in the order provided. Unless otherwise asked, please attach all logs

 

Please make the following system changes:

  • If you have not done so already - Enable System Protection and create a NEW System Restore Point
  • Temporarily disable your antivirus real-time protection or other security software first only if it blocks or interferes with the scans or downloads.. Make sure to turn it back on once the scans are completed
  • Temporarily disable Microsoft SmartScreen to download software below only if needed. Make sure to turn it back on once the downloads are completed
  • Disable-Fast-Startup
  • Show-Hidden-Folders-Files-Extensions

Please run the following scans:

  1. Click the following link and run a  Scan with AdwCleaner
  2. Click the following link and run a  Scan with Malwarebytes 
       RESTART the computer
  3. Click the following link and run a  Scan with Farbar Recovery Scan Tool 
     

Example image of where to click to attach files when posting your reply

image.thumb.png.e208c182ff570799c53bcf57

 

Thank you

 

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